Access-Metro Versatile Coherent Dual Optical Network Providing Integrated Services

Abstract

A novel access-metro network architecture based on lightpath flows, using coherent transmissions, supporting numerous passive optical networks (PONs), and integrating multiple services, including 4G/5G/6G mobile networks, is presented. The lightpaths flows are flexibly assigned in an ultra-dense wavelength division multiplexing PON (UDWDM-PON) with dynamic bandwidth allocation. The mobile networks are integrated in a cloud radio access network (C-RAN), which provides reconfigurable capabilities between the remote radio heads (RRHs) near the users’ premises and the baseband units (BBUs) located at a centralized central office (CO) in the metro side. The whole access-metro proposal incorporates the PONs, including the C-RAN services, in a versatile coherent dual optical network (VERSONET) ring architecture; enabling resilience, real-time centralized control, provisioning and also administration and maintenance (OAM) functions.